CSC Corptax vs TaxCalc
CSC Corptax
cscglobal.comTaxCalc
taxcalc.comSide by side
| Figure | CSC Corptax | TaxCalc |
|---|---|---|
| Price from | — | £3.50/mo |
| Free plan | — | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | — |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| Plans published | 1 | 5 |
| Spec score · Corporate Tax Software | 7.8 (#7) | 8.1 (#3) |
| Company history | CSC says it was formed in 1899 by Delaware attorneys Josiah Marvel and Christopher Ward. | TaxCalc says the product began in 1983 when Which? released its first version for the BBC Model B. |
| Founded | 1899 | 1983 |
| Headquarters | Wilmington, Delaware, USA | Wokingham, England, UK |
| Integrations | Corptax lists connectors for Microsoft Power Automate, Excel through Corptax Office, Alteryx, and Microsoft Power BI. | Accounts Production imports year-end trial balances from Xero, QuickBooks or FreeAgent and can export journals and adjustments back. |
| Intended users | CSC describes Corptax as built for enterprise tax departments and says its solutions support 1,000 corporate clients in 100 countries. | TaxCalc says its products serve accountancy practices, in-house finance teams, sole traders and individuals across the UK. |
| Support | Corptax advertises support plans named Silver, Gold, and Platinum, a 99% satisfaction rating, training, and professional services. | The company says every licence includes unlimited UK-based support from accountancy-trained specialists by phone and email, Monday to Friday. |
Plans
TaxCalc
- TaxCalc 2026 Individual 6£42 a year
- Engager Practice Management — up to 5 clients£9 a month
- Self Assessment tax software£42, paid once
- Accounts Production 12£164 a year
- Individual 12£187 a year
In their own words
CSC Corptax
CSC Corptax is web-based software for enterprise tax departments, bringing tax compliance, income tax provision, reporting, and filings together in one system. It centralizes tax data and workflows for U.S. and global compliance, provision, and planning, including Pillar 2 and U.S. international and domestic tax work. Compliance tools automate calculations, forms, data dependencies, adjustments, and apportionment across federal and state reporting. Corptax GMT supports safe harbor and top-up tax calculations, financial reporting data, GloBE Information Returns, and local notifications and filings. Corptax Analytics runs within Corptax Web with prebuilt dashboards, state heatmaps, refreshes, and alerts. Connectors include Microsoft Power Automate, Excel through Corptax Office, Alteryx, and Microsoft Power BI; users can also connect data to third-party tools, databases, and analytics applications. Entity Management holds legal entity, ownership, organization chart, and entity group data in a shared database. CSC offers Silver, Gold, and Platinum support plans, training, and professional services. Pricing is available on request, and the product page invites visitors to request a demo.
TaxCalc
TaxCalc is a UK accounting software platform for tax compliance, client management, and practice operations. Its products prepare personal, partnership, trust, and company tax returns, as well as statutory accounts. For Self Assessment, SimpleStep guides users through relevant sections, with an option to switch to HMRC-style forms. Calculations update in real time, and Check & Finish reviews a return before submission. Tax products submit directly to HMRC, while Accounts Production files statutory accounts to Companies House. Accounts Production can import year-end trial balances from Xero, QuickBooks, or FreeAgent and export journals and adjustments; integrations differ between products. TaxCalc supports self-employment and investment income, but does not include state filing. It runs on Linux, macOS, and Windows, with mobile access limited to the web. Pricing is paid, from £42, with a free trial and no free plan. TaxCalc says each licence includes unlimited weekday phone and email support from UK-based, accountancy-trained specialists.